ECE344 — Operating Systems

Concepts covered

Process
- Process control blocks
- Process states (blocking, zombie, orphan)
- Inter-process communication
  - Pipes
  - Signals
  - Sockets
Kernel
- Syscall (Linux syscalls)
  - read and write (operating on file descriptors)
  - exit and exit_group (exit statuses)
  - fork (spawning processes)
  - execve and execlp (replacing processes with other programs)
  - wait and waitpid (cleaning up child processes)
  - sleep (time blocking)
  - pipe (creates a bidirectional pipe)
  - dup and dup2 (duplicating file descriptors)
  - mmap (file to virtual memory mapping)
- Linux
Virtual memory
- Segmentation
- Page table (page faults, computations)
- Memory management unit
- Translation lookaside buffer
Scheduler
Thread and multithreading
- POSIX threads
  - pthread_create (create thread)
  - pthread_join (join on thread, equivalent of process wait)
  - pthread_exit (exit thread)
  - pthread_detach (mark thread as detached)
- Detached, joinable threads
- Threading libraries (many-to-one, one-to-one, many-to-many)
- Thread pool
- ucontext
- Race condition
- Atomics
- Mutex (deadlock)
- Condition variable (monitor)
- Semaphore
Filesystem

To compile with Meson:

meson setup build
meson compile -C build

Quick links: